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Proceedings Paper

Study of atmospheric pollution using terahertz wave
Author(s): He Cai; Dong Wang; Jingling Shen
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Paper Abstract

Terahertz time-domain spectroscopy (THz-TDS) is a new coherent spectral technique. In this paper the spectral characteristics of air pollution gas, sulfur dioxide and hydrogen sulfide, had been measured with THz-TDS in the range of 0.2-2.6THz. The result shows that both the gases have equi-spaced absorption peaks and different gases have different intervals. We also investigated the influence of pressure on absorption spectrum by changing the pressure of the gases in a chamber. The experimental results indicate that the absorption peaks become sharper with increasing the pressure. Our experiments prove that terahertz Time-Domain Spectroscopy technique should be a powerful candidate for detecting atmospheric pollutants.

Paper Details

Date Published: 5 November 2010
PDF: 10 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78542J (5 November 2010); doi: 10.1117/12.868779
Show Author Affiliations
He Cai, Capital Normal Univ. (China)
Key Laboratory of Terahertz Optoelectronics (China)
Dong Wang, Capital Normal Univ. (China)
Key Laboratory of Terahertz Optoelectronics (China)
Jingling Shen, Capital Normal Univ. (China)
Key Laboratory of Terahertz Optoelectronics (China)


Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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